migratory bird候鸟；migration迁徙；bird-watcher观鸟人；Oriental snowy plover东方环颈；cuckoo布谷鸟/杜鹃；nightingale夜莺；skylark云雀；wild goose大雁；swallow燕子；swan天鹅；hummingbird蜂鸟；whippoorwill夜鹰
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migratory bird候鸟；migration迁徙；bird-watcher观鸟人；Oriental snowy plover东方环颈；cuckoo布谷鸟/杜鹃；nightingale夜莺；skylark云雀；wild goose大雁；swallow燕子；swan天鹅；hummingbird蜂鸟；whippoorwill夜鹰
